Welt-sewing machine.



Patented J an. 19, 1915'.

7 SHEETS-SHEET 1.

QWY

Z E J2 m r a H Z Wm H m arroqgas .EI. A, BALLARD.

WELT SEWING MAOHENB.

APPLIOATION FILED APB.80,1909.

- Q Patented Jan. 19, 191 5.

7 SHEETS-SHEET 2.

ikhizwww 2% m writ/651s H. A. BALLARD. WELT SEWING MACHINE. APPLICATION FILED APR. 30, '1900.

; 1,125,038. Patented Jah. 19, 1915.

I. 'T SHEETS-SHEET 3.

A. BALLABD.

WELT SEWING MACHINE.

APPLICATION FILED A'PILBO, 1905.

1,125,038 Patented Jan. 19

'7 SHEETS-SHEET 1921116192502: jiLWP/"ZE BaZZzw H. A. BALLARD.

WELT SEWING MAOHIEE.

APPLICATION rum APR.30, 1909.

latnted Jan. 19, 1%15.

7 SEEETSSEEET 5.

H. A. BALLAEDI WELT SEWING MAGHHTE.

APPLICATION FILED AYE.80. 1909 Patented Jan 19, 1915.

7 SHBETS-SHEET 6.

H.A.BALLARD. WELT SEW APPLICATION FILED APR. 30, 1909.

ING MACHINE.

Patented 5211.19, 1915.

UTHEFE STATESlEKENT HARRIE A. BALLABD, OF BGSTON.

@EhECE.

MASSAQHUSETTS, ASSZGNOR T0 THE BOYLSTON MFG. COMPANY, OF SOUTH BOSTQN. MASSACHUSETTS.

A CORPORATION OF NEXV JERSEY.

W'ELT-SENING MACH ENE.

Specification of Letters Patent.

Eaitcnted Jan. 29., 191.5.

Application filed 1112:1130, 1909. Serial No. 93.208.

To 1! Ila mm if may mnrern Be it. known that 1, Hanan; BALLARD. of Boston. in the county of Suffolk and State of iwlassachusetts, have invented certain new and useful Improvements i Welt- Sewing Idachinesfof which the Following a specification.

This invention relates to shoe-sewing machines and more especially to the type known as a welt sewing machine", in which a curved oscillatory needle and \vaxedtln'einl are used.

The chief object of this invention is to provide mechamsm of an improved char acter for overcoming certainohjections ex isting in machines or this type now in gen- .eral use.

A very serious and common objection in machines ot'this type is the vibration imparted to the work by the stitch-forming and nork-feedmg means. Such vibration is not only m'ipleasant for the operative, hut handicaps the attainment of skill requisite for sewing a shoe, and often results in imperfect worlr.

Another common objection is found in the tervals between the positions are governed by the spacing of the ratchet teeth. and consequently the work rest cannot often he positioned with accuracy.

The first or these objections is overcome by bracing and releasing the work at the appropriate intervals of time relatively to the action of the needle. -i laterally movable needle is employed and it constitutes an element of the work-feeding mechanism in addition to an element of the stitchtorming m chanism. Alaterally movable channel g le is employed and is actuated so as to i ace the work prior to penetration by t? needle and to release the. work prior to rctograde lateral movement.

The other objection mentioned is overcome by providing frictionally operative locking mechanism for the work rest. As a result. there are no predetermined positions at which the work rest is locked. but it be effectually locked at any position, and is I chine.

I 1 welt game.

not subjected to any or jerk from oper ation of said locking mechanism.

Other improvements and their advantages are hereinafter explained and are illustrated by the accompanying drawings which show one form in which the invention may be embodied.

Figure 1 represents a right side elevation of the working head of a welt sewing inal ig. is a left side elevation thereof. partly broken away. Fig. 3 is a vertical section as seen from the righthand side. Fig. l is front e.cvation of the work-teeding carriage and actuating mechanism therefor. Fig. is a front elevation of the looper mechanism. Fig. i; is a top plan View thereof. Figs. 7 and 8 are top plan views of portions of the looper-actuating mecha nism. Fig. 9 is" a right side elevation of the talrewip mechanism and a portion of'the stitch-forming mechanism. Fig. 10 is a section on line 1010 of Fig. 3. Fig. 11 is a ri ht side elevation of the needle-guide :ar'ier. Fig. lQis top plan view of the Fig. 12"- is a perspective view of a fragment ofa welt strip. Fig. 13 is a right side elevation of the welt guide. Fig. ll is a front elevation thereof. Fig. 15 is a diagranrot' the path described by the. point of the needle. Figs. 1b. 17. 18- and 19 represent the needle, looper and thread linger in various positions occupied in the formation of a stitch. Fig. 20 is a right side elevation of the channel guide and its actuating mechanism. Fig. 21 is a section on line 21Ql of Fig. 20. Fig. 22 is a section on line i2292 of Fig. Fig. 23 is a left side elevation and partial section of the mechanism for actuating the work rest and welt guide. Fig. 2% is a vertical section of a portion of the friction mechanism for controlling the work rest and welt guide. Fig. is a vertical section of the thread tension. Fig. 26 is a section on line 2626 of Fig. ,Fig. 27 is a left side elevation of a hanger shown in Fig. 23. Figs. 28 and 99 are respectively a left side elevation and'fr'ont elevation of the friction controller for the work rest. Fig. 30 is aside elevation of a link for positioning the controller shown by Fig. 28. Fig. 31 is a perspective view of an adjust: able stop comprising a part of the Welt guide mechanism. Fig. 32 is a vertical 59 2 ties on line 32-32 of Fig. 2a includingad ditional members. Fig. 33 is a section on line 3333 of Fig. 32. Fig. 34: is a "detail view of the spring for actuating the workrest. Fig.35-isa detail view of an adjusting device for the work-rest mechanism.

The same reference characters indicate 0 the same parts wherever they occur.

On the drawings, 10 represents the frame of a working head of a welt shoe-sewing machine, adapted to be mounted upon a suitable base or standard not shown, and formed with bearings for a power shaft 11.

The head is formed oftwo parts includingfinger 17 for drawing the thread'as herein after explained' The needle is oscillated about an axis so as to cause it to enter and leave the work, and is also moved longitudinally of its axis for the purpose of feeding the work step by step. In order to effectually brace the needle against lateral strain when feeding the work, it is supported on opposite sides of the between substance. ()n the outer side of the between substance, the needle is braced by an oscillatory guide 18, and on the inner side of the between substance the needle engages the channel guide 16 and is thereby braced. In order to insure ease of operation of the needle guide and channel guide, they are all mounted so' as to be movable about a common axis.

20 represents a stud mounted upon a laterally movable feed carriage 21 and adapted to support a series of three carriers indicated at 22, 23 and 24:.

22 is the needle carrier.

23 is the needle-guide carrier, and. 24 is the channel-guide carrier, all of which are independently movable about the stud, but which all move laterally with the stud when the feed carriage 21 is moved. The feed carriage is shown most clearly by Figs. 2, 4 and 22. It is formed with parallel flanges 25 which are arranged in suitable guides on' the head 10 and is also formed with a depending arm 26 in which the stud 20 is affixed. The feed. carriage receives its lateral motion from a cam 27 formed in a cam disk 28 which is affixed upon the shaft 11. Motion is transmitted from the cam 27 to the carriage by a lever 29 of which one end is pivoted upon a fixed stud 30 and .of which the other end carries a roll 31 coiiperating with the cam. The

feed carriage is formed with a. perpendicular slot 32 in which is arranged an adjustable stud 33 adapted to be clamped in any desired position in the slot. The inner end of the stud 33 is provided with a square block 3i which occupies a groove 35 formed in the lever 29. When the needle is at the left-hand extreme of its feeding stroke,'the groove 35 is parallel to the slot 32, as shown by Figs. 4: and 22, and consequently the left-hand limit of the feedingstrike remains constant and is not varied by adjustment of the stud 33. The length of the feeding stroke imparted to the carriage is varied by adjusting thestud toward or from the fulcrum 30, but in such case the right-hand extreme of the feeding stroke is varied.

The carriers 22, 23 and 24 all move latorally in unison with each other but are provided with separate actuators for oscillating them'independently of each other about their a xis 20. The needle carrier 22 is providedwith spur teeth 36 in tlii' form of a segment which intermeshes with a gear segment 37 formed upon a lever 38 pivotally mounted in the head 10 upon a fixed stud 39. The lever 38 is formed with an elongated hub or sleeve 40, see Figs. 9 and 80, for the purpose of giving it a long hearing on the stud 39. The lever 38 is formed with a radial slot 11 in which is arranged an adjustable stud 42 connecting the lever with one end of a connecting rod 43 which is mounted upon an eccentric 44L carried by the shaft 11. The rotation of the eccentric imparts oscillatory movement to the lever 38 which in turn imparts similar movement to the needle carrier. The cooperative faces of the gear segments 36 and 37 are sufficiently broad to maintain intermeshed relation regardless of the lateral movement of the segment 36 relatively to its complemental segment. The oscillatory movement imparted to the needle is so combined with the lateral movement of the feed carriage as to cause the point of the needle to move in a path of the character shown by Fig. 15. In this figure, the point of the needle is at a which is farthest remote from the work. At this point, the needle is at the end of a feeding stroke, and, upon subsequent movement of the needle toward the work, the feed carriage is given a retrograde lateral movement, which causes the point of the needle in moving from a to b to move to the right while moving toward the work. The needle, in moving from b to c, enters the between substance and emerges at the inner side thereof, still continuing to advance while the feed carriage is given a feeding movement, thus causing the needle to move I from c to 03. At (1 the eccentric 44 is pass after explained.

' and 21. The actuator for the than the needle remains prscticiilly stationary long enough to permit the looper 15 to lay a loop of thread a'hout the herb as hereinlhe needle is then retracted from Z to a for the purpose of drawing a new loop of thread. through the Work. A more co etedescription of the stitch-forming ope; tronis hereinafter eluded.

The needle-guide cerrier 23. which is on the left-hand side of the needle carrier, is moved in one direction by a spring elf) and in the other direction in; a. stud l6 a hxed to the needle carrier. The stud l -3 projects into a). segmental groove formed in one side of the carrier 23, and uv stud s8 ziltixed in the feed carriage arm :26 projects into :1 segmental groove 49 formed in the opposite face of the carrier 23. The spring 45 ere erts its tension to move zhe needle guide 1.8 toward the work and it limit of movement is determined by the stud 4S engaging one end wall of the groove 1-9. Vlhen the needie is Withdrawn from the work, the stud +l6 on the needle carrier moves through the groove -17 and etgnging the end well thereof retracts the carrier QE against the tension of the spring -25. During the first portion of the Increment of the needle toward the work, the needle guide 18 moves in unison therewith until arrested hy the stud 4-8, whereupon the needle continues to its for ward extreme, and, in returning, it. moves ul0ng-duriug the first part of its movement until the carrier 23 is picked up by the stud 46, whereupon the two carriers and 23 return to their remote positions in unison. One end of the spring so is connected. to a suitable fixture in sueh a manner as to not interfere with the lateral movement ini purted to thecurrier 23.

The mechanism for oscillating the nel guide 16 is best shown by Figs is a lever 50 which is mounted sleeve ll) of the needle actuator. One end of the lever 50 carries a roll 51 which is held againstthe periphery t the ram disk 28 by reason oi a spring he periphery of the cum disk is proxy upon the led with a depression 53 which cooperates with the roll 51 and enables the lever "l) to respond to the tension of the spring The other end of the lever 30 is formed with :1 boss 54, in

which is a secret 55 extending parallel to the axis of the needle stud 20. The socket 5-") is orcupied by a pin 56 formed upon one end of a link or strap which has a shorter pin at its other end. 7 58 is u so parellel'rto the axis of the needle Stud pirotally eouuected with the Channel -giide earrier ()scillatory movement, imparted to the lever 50, muses the ii; 5? to back and forth and it thus to. scillate-the-clmnnel guide about. its

nee axis 20. The channel guide, however,

mos s laterally gvith the feed carriage, whereas the level 50 is not laterally movable. lhe link 5? also mores laterally with the channel guide and is confined between guides 59, which cause the pin 56 to move in and out of the socket with a telescopic action. neetion adapted to he moved back and forth to oscillate the channel guide regardless of the lateral movement of the feed carriage.

The thread. which is indicated at ac, is drawn .rom any suitable source of supply, n'el'eruhly at the rear of the machine, and utter being ii'uinersed in was, passes over a .he link 57, by reason of this conroll 50 to u. tension roll 61 about Which it i may be given any desired number of eonvolutions. The thread leaving the tension roll 81 pa to a suitable take-up, and. for the purpose of protecting and guiding it toward the take-up. it may be passed through a tube (32 sliixed in the head 10.

' movement of the arm ()6 when the latter is nel mutilated moved against the tension of its spring; The roll 65 is mounted on the free end of a bell crank lever to which is mounted upon the sleeve or hub 40 of the needle actuator, and which has at its other end a cum roll which oceu pies a cam groove '71 formed in the disk 28. The roll (33, at the free end ml the arm 69. has a wiping contact with a heating surface 65 which is formed upon u bracket 72 chamber (see Fig. pussin from the roll 65 to first. through a fixed guii thr ugh the looper l5. (-1 i lllllC The thre'ad,- in the work, passes le 74 and then The thread guide also formed upon the steam-heated imand assets in keeping the waxed 3i a heated state while approaching .mrk. The looper 15 is also heated for he same purpose as hereinafter explained.

The looper mechanism is similar to the luoper inerlninisiu illustrated and described in my copending application filed Decentber 26, 1907. Serial No. $08,034:, and cornprises :i nozzle which describes a circular lit? inoven'ient and which is actuated. intermit-.

teutly so as to it tonnove first in one direct i 'l'l thro u one-quarter reroi opposite direction through one-quarter of a revolution to its initial position. The looper reeeives its motion from o pair of sl gearsY'Z'S and it, of which zpproxiniutely one v and ons, and then in the containing a steam heating the former is keyed upon the shaft 11. The gear 76 is aliixed at the upper end of an up right shaft'77 asshown by Figs. 1 and 5. The lower end of the shaft 77 is provided with a crank pin 78 which is embraced by one end of a rod 79. The .other end of the rod 79 is formed with a spin lamp 80 in which the upper end of the looper 15 is secured. The rod 79 has aliixed to it a shorter rod 81 which has a sliding fit in a swiveled stud 82.

The stud 82 is journaled in a bracket 83 afiixed to the head 10- and has at its upperend an arm 8e pinned or otherwise ailixed. The arm 84 is formed with a groove 85 which is parallel to the rod 81. The groove 85 is occupied by an elongated head 86 at the upper end of a stem 87 aflixed to the rod 79. WVhen the shaft 77 is revolved, the movement of the crank pin 78 causes the looper carrier 79 to move forward and back and at the same time to oscillate about the axis of the swiveled stud 82. The head 86 moves longitudinally in the groove 85 and assists in steadying the rod 79 so as to prevent it from turni n g on its axis. The movement imparted to the nozzle of the looper 15 is approximareiy the opposite of the movement of the crank pin 78. The forward end of the looper carrier 73') and the. upper end of the looper shank clampeo therein bear against the under side of a nose 88 projecting from the thread guide 71-. The nose 88,

' 'when heated, tends to keep the looper sufficiently heated to preserve the wax on the thread in a soft state when it is presented to the needle.

The spiral gear 75, which turns with. the shaft 11, is formed with a relatively long series of teeth 89 inclined in one direction and a. relatively short series of teeth 90 inclined in the opposite direction. The intervals between the series 89 and 90 are oc cupied by segmental ribs 91. 92 which are adapted to cooperate with grooves 93 and 9-} formed in the gear 76. The gear 76 is formed with a relatively long series of teeth adapted to intermesh with the teeth 89 and with, a relatively short series'ot' cross-cut teeth adapted to inter-mesh with both of the series 89 and 90. The number of teeth in the series 89 is suliicient to revolve the gear 76 through one and one-quarter revolutions in one direction, and the number of teeth in the series 90 is sufficient to revolve thc gear 76 through one-quarter of a revolution in the opoosite direction, and thus restore the gear 6 to its initial position once for each revolution of the gear 7 The thread finger 17, whose function is hereinafter explained, is adj ustably clamped in a holder 95 which is formed with a stud 96 journaled in a boss 97 the steamheated bracket 72. On one end of the stud 96 is clamped an arm 98 whose free end is connected by a pivoted link 99 to 'an actuator 100 (see Figs. 1 and 3). The actuator 100 is in form a bell crank lever and is fulcruined upon the hub or sleeve 4010f the needle actuator in the same manner as the channel-guide actuator 50 and the takeup arm 69. The other end of the actuator 100 is provided with a roll 101 which occupies a cam groove 102 formed in the disk 28. By this means, the thread finger is oscillated intermittently so as to cause it to engage the thread a: between the looper and the needle, and to draw the thread toward'the rear and to subsequently more to the front so as to give up to the needle the thread previously drawn.

Stitc/zf0rmiag and work-feeding operar'i0n.l'Vhen the needle is in the position shown by Figs. 15 and 19, it iswithdrawn from the work to its most remote position. As it advances to the work, it moves to the right so as to penetrate the work at a new point preparatory to feeding the work. 'At this time, the thread finger is in its forward position and is disengaged from the thread. The channel guide 16, up to thispoint, is in operative engagement with theflvork but is retracted so as to release the work immediately prior to the movement of the needle from a to 72, see Fig. 15. By reason of so releasing the work, the channel guide is 7 enabled to move laterally with the needle in order to engage the work at a new point without liability of moving the work laterally or oi disamranging or jerking the work. lVhen the needle arrives at b, it is about to enter the work and at this point the channel guide is again actuated so as to operatively engage the work prior to penetration by the needle. Thus the work is sufliciently braced by the channel guide which has a very slight oscillatory movement prior to the penetration by the needle, and the work is therefore not subject to jerking when the needle enters. The needle, in passing from b to 0, penetrates the work and emerges at the inner side of the between. substance, as shown by Fig. 16, and continues, to advance during the feeding movement of the carriage which causes the needle to move laterally from c to (Z. During the movement from c to (Z, the several parts move from the position shown bv Fig. 16 to the position shown by Fig. 17.

lv'hile the needle is moving to the left, the

looper moves to the right describing a clockwise movement about the end of the needle so as to lay the thread about the barb. At the same time the thread finger 17 moves from front to rear, thereby engaging the thread between the looper and the needle and drawing it to the position shown by Fig. 17. The looper continues to move until it reaches the position shown by Fig. 18, v at which time it has completed one and onequarter revolutions about the needle. Meanmesses while the needle starts back at first slowly and thethread finger 17 moves forward. thus giving up its thread to the needle so that the needle draw a newly formed loop backward through the Work without imposing undue tension upon the thread. At the completion of the backward move ment of the needle, the several parts occupy their initial positions after having coniplet'ecl one cycle of movements.

' The machine equipped with a suitable Work rest 103 which is movable from front to rearand which is subject to spring lon sion tending to more it forward and which is intermittently locked released with relation to the "feeding movement of the Work as hereina er explained. The inachine is also equipped With a wait guide I l which is mounted and actuated so as to more in an arc concentric to the axis of the needle. The wait guide see Figs. 3, 12, 13 11) is adjnstably mounted on the forward end of an oscillatory carrier 105. It is connected. to'the carrier a pivot send 108 and by an adjustable clamping stud 10? which is adapted to be clamped in de sired position in a slot 108 formed in the end of the carrier. The W231; guide is adapted to engage a shoe on the right-hand side of the needle and is formed with a hooked finger 109 which extends hack of the needle and toward the Work as to enfla e the work on the opposite side of the needle. The under face of the finger 109 i provided with teeth 110 (see Fig. 1-1) 'hich are adapted to prevent tieiwork fro i nosing from left to right, the feeding Inc-Yemen of lyu t J I the Work being from right to 12 shows a fragment of adapted to he sewed to the adapted to pass through the Welt strip-is formed with a the reception of; the stitch guide 1 1 is provided :vith forward on is adapted groove 112 and guide the rel tion to the shoe.

'ie carrier 105 is mounted J 51 upon a pair of cs 'llatm'y 16 mounted respective 11' and a stationary stud 113. 1 so mounting the ca rier 105 0 receive an oscillatory mot-ion a swinging parallel rul nus of the pivots 11% I "a 11? 113 is equal to the re 1 thus insuring 10w n'oli ccntr I is of'an equal radius to that of The welt guide is so adjusted groove 112 in the Welt strip i the oath of the needle, thu our in causing the point to penetrate the welt strip in the groove 112 in everyhase. The carrier 105 is subject to the tension of a spring 119 which tends to nioi'e the welt guide toward the Work. The rockshaft 117 is alternately locked and oscillated. as hereinafter explained. to lock the welt guide and move it from the Work. 120 is an adjustable stop screw-threaded in a Web of the head 10 and arranged in the path of the free end of the arm 115 so as to limit the movement of the arm toward the WOlk.

Referring now to Fig. 2-1, which shows a rear section of the members connected with the rock shaft 117. it will be seen that the shaft is provided with a disk 121 affixed to the shaft by a pin 122. illie disk 121, hereinafter teiinetl ihe friction drum, is formed with an annular groove 123"Which is adapted to contain a split friction ring 12 1 (see Figsulg and'QGL The split ring 121 normally tends to free itself from the friction drum but its ends are adapted to be separated so to expand it against the outer flange of the drum. l n Figs. 23 and 33 is shown a member 125 which is hereinafter termed a controller. The controller is in t e form of a plate having a square boss 126 at apted to occupy the groove 123 between the ends of the split ring 121, and; when.

turned about the axis of the boss, is adapted to expand the ring so as to cause it to frictionally engage the flange of the drum 121. The plate is formed with a radial slot 127 which is occupied by a sliding block 128 mounted upon a stud 129 carried at the free end of an actuator 130. The actuator has the form of a hell-crank lever at the other of which is a cam roll 131 00- operating with cam groove 132 formed in the 28. The fulcrum of the actuator 130 is a stud 133 mounted in a movable hanger The hanger in practice remains stationary While the shaft 11 is in the forva, drive, as indicated by the arrows in gs. 1 2, and 23. has is adapted to be R 3 as shown hy Fig. 2. In tion the hanger 13 1 remains at all excepting n'hen the shalt 11 is turned times I the opposite direction. The oscillation imparted to the actuator inc 130 causes the controller 125 to swing back and forth about the rock shaft 117 carrying with it the normally loose split ring 121. In order to cause the controller .125 to turn about the axi'" of the boss 126, a pair of stops 112 and 11:5 is arranged in its path, one on either side. The two st are adjustable for the purpose of pro ng more or less space between them in which the controller may travel without opposition.

The stop 1'12 ii: the form of a hill-crank lever and is mounted upon astud ll-l projecting from the frame 1i" and subject to the tension of a spring 11-5 which tends to move the stop toward the controller. The stop, however, is provided with another finger 116 which is adapted to engage the peripher of the drum 121. as shown by Figs. 2 and 2?). and so to limit the movement of the stop toward the controller. The position of the stop may be adjusted by means of a cam 1-17 formed upon one end of a stud l-l-S having a bearing in the frame 10 and adapted to be set atany desired position and clamped. The cam is adapted to engage one edge of the finger 1:16 and hold it in various positions against the tension of the spring 145. For the purpose-of clamping the stud 1 18. it may be formed with a. screw thread at its other end and provided with a clamping nut 1-19.

The stop 1-13 (see Fig. 31) is formed upon an adjustable block-l50 pivotally mounted upon a stud 151 (see Fig. 32). The block 150 is provided with a pin 152 which is engaged by a spring exerting its tension so as to tilt the block and cause the stop 1 13 to more toward the controller 125. The position of the stop 1-13 is adjusted and determined b v an adj ustablc stop screw 15-1 which holds the block 150 against the tension of the spring.

The operation of the controller 125 is as follows: For (-uv'ample. if the stops 142 and 1-13 are so far apart as to he bevondthe range of movement oi? the controller. they are not eill'ecti we in causing the controller to turn about the'axis of the boss 126 and consequently the controller and split ring 124: oscillate freely with relation to the drum 121. It, on the other hand the stopsare adjusted so as to lic v-v'ithin the range of movement of the controller, ;niovemcnt of the l ver end of the latter is arrested by engagement with eitherstop. Inasmuch as the upper end oi the controller "receives a predetermined movement for each oscillation of the actuator 130, the upper end of the controller continues to move after the lower end is arrested by either of the stops. Thus'it is apparent that the split ring 124 is expanded by movement of the free end of the controller relatively to the boss 126 and that continued movement of the free end of the controller causes the expanded ring and the drum to revolve. In this way, movement is imparted to the rock shaft 117 vfor the purpose of actuating the welt guide. The tension. of the spring 115, While sufficient to arrest the movement of the controller for the purpose of expanding the ring 124:, permits deflection of the stop 1&2

while the controller 125 continues to move after having expanded the ring 121. step 143 is adapted to yield in the same manner as the stop 112, the spring tension in each case being sullicient merely to cause a rocking of the controller about the axis of its square boss.

The stops are preferably adjusted so as to cause cooperative engagement ofthe ring 121 when the welt guide is in position to engage a shoe, and to release the welt guide immediately upon reverse movement of the by spring tension, is formed upon one end of a longitudinally movable bar mounted so as to slide in guides-155 (see Fig. The rear end of the work restis provided with a gear rack 156 (see Fig. 23), which intermeshes with a pinion 157 formed upon'one end of a sleeve 158 loosely mounted upon the rock shaft 117. The movements i111- parted to the rock shaft and to the sleeve 158 are entirely independent of each other and in no way conflict. The other end of the sleeve 158 (see Figs. 2-1 and 341) is con- .nected to one end of a clock spring 159 whose other end is attached to a fixed pini 160. The spring exerts its tension to turn the sleeveand the pinion so as to project the work rest toward the work. The sleeve 158 is further provided with 'a'friction drum 161 similar to the drum 121 for actuating The l the welt guide. The drum 161 is keyed or otherwise ailixed to the sleeve 158 and is formed with an annular groove 162 which is occupied by a split ring 163' (see Fig. 82). The ring 163 is in all respects like the ring 12% and is adaptechtobe expanded in I the same way. F or this purpose, a second controller 16% isuprovided (see Figs. 28 and :29). y

The controller 164 istormed with a boss which has a cylindrical portion 165 and a square portion 166, the latter portion being adapted to enga e and expand the ends of the ring 163. -nlike the controller 125,

about ti 2 axis of the square liuss.

braces thestucl 131. as shown by Fig, 7

'in a socket formed on the hold it in lowland pntiillkill until the. next however, the controller 161 is not pe mitted to oscillate about the axis oi the shaft 11?, but is confined at all times to oscillation For this purpose, a pivoted link or strap luiis provided (see Figs. 30, :32 and E3}. One end oi the strap llli' embraces the oylindrical' portion 165 and ihe other end occupies a saw slot 16S formed in the block and ein- 'iilli) 3. is

. but is formed controller 161 unlike the controller 1 not formedwith 2i radial sic with a hooked linger 165) 'h extends partially around the'siuzl 1 7 carried at the free end of the actuator ill"). The reason fol-So forming the controller 16% is to adapt it to he engaged by an actuator 13 and a; the same time to avoid the stud 1'39.

. The actuator is a lover mounted upon the same stud 33 as the actuator 130, and its upper end (see Fig. 23) is formed with a lip 171 overlapping the periphery of th cam disk 28. The lip is held toward the cam disk by a spring "follower 1T2 contained exterior of the casing 13. The follower is actuated by a spring 173 and it is this tension of the spring which causes cooperative engage mentof the lower end of the aot-uetorwith the finger nae, thus causing an expansion of the split. ring 163. The boss of the controller 161 being held posit-i ly by the strap 167, prevents the turning oi the drum 181 when, the ring is expanded and in this way the work rest efl'ectu loclzeo against all movement. flhe lip 171 is prevented by the coiipei'ative engagement of the actuator 1T0 ivith the finger 1159 from actually engaging'the disk 128, but, when the disk is in motion, the actuator 170 is periodically retracted against the tension oi the spring follower by a cam SllOlllCiM 1H \i'liich en gages the inner side of the lip 171. 13y this means. the controller 16% is caucd by he tension of the spring 173, to loci the rest, and. when the cum shoulder 11lt'racts the actuator, the split ring 163 is g mitted to assume its normolli' free posi" The retraction of the actual'or 170 is prof; ably timed so io release the work rest in J1'lt-(li;1tl prior to he feeding movement of the Work, and to losrl the 'Hl-I r st at ilie completion of the i ecilin' nio 'i-nient, and to feeding 'moi'em L313 tion of (he tliro.- 31 located f .1

work res: x i nioiiiic'd stud 175 lv from 176. i is inter twee i oring the The spring is coiled about a screw-threaded stem 1? extending from the stud 175 and Pl'OlldCil with a adjusting nut engagin one end of the spring. A lever 181 is mount d upon the stem 179 and is interposed between the spring and the stud 175, and is :nlantwl to lrict-ionally engage the and of the hub formed on the tension roll. llhc eliil oi the stud 175 is formed with innlineil teeth 18: which adapted to co- A mo with similar teeth 183 formed upon the :u'?eiii factof the hub of the lever 1 The cooperative teeth are prevented -ulcil upon each other when from being the lever 1'51 in its normal position by rca: in of the frictional engagement of the lever with the huh of the tension roll. in th'isn'ay the full tension of the spring 175 may be exerted upon the tension roll which is compressed between the lever and the friction. disl: 177. By reason of this fricion the thread which may be vgiven an x desired number of convolutions about the roll, niav he subjected to tension which may be 1' "ed by the nut 180. The lever 18] however is adapted to be oscillated so as to cause the cooperative teeth 182 and 183 to displace the lever axially and release the t read roll. as shown by Fig. When the lever is in this position, the full tension of the spring 178 supported by the teeth 182 and the thread roll is free to turn. The free end of the lever-181 is formed With an indentation 13-1 Fig. 2). The indentation is oceu iied by a stud 185 carried by :1 depending a rm 186 formed upon the hanger ll'hcn the shaft'll is in the forward drive. ihc hanger 131 is held in the position three! lmt. when the shaft is reversed, it mi oscillatory movement of the hangu aiul of'the lwer 181, thus releasing the ij'fl'mlfili upon the thread roll. \Vhen the shaft. 11 is reversed. the shbulder 1238 en- "mi oi the pawl 1'37. thereby re pan"! and the arm 136 against of he spring 135) so far as to wl to engage a fixed stop 187 'lhis stop limits the bacle worm, ottlie shaft. and in this po- .s'li'inll Ei' will I? causes the release of the t the same time the fuL '3 ii the actuator 170 is moved win ans the actuator to rei therinore the lower a lug 188 on the i i, oh reti suing the welt guide, time the nor-(lie 1+ is retracted to posit 9n. the shoe is released by of the channel guide 16, and the entircl freed so that it may from the machine before ser- Playing;- thus expleined the. nature of my said invention and described a way of con structing and using the same, althi'iugh without attemptii to set forth all of the forms in which it may be made or all of the modes of its use, I. declare that what I claim is i l. In a shoe-sewing machine, stitch-form ing mechanism including a needle, a channel guide, and means arrauge zl to move said needle and channel guide laterally to feed the work, said channel guide being arranged to engage the needle daring such feeding movement to bracet hc needle against lateral stress due to feeding.

9. In a shoc-sewing machine, stitclrfornr ing mechanism inchulinga needle, a channel guide, said needle being arranged to enter the between substance from the side opposite said channel guide, and means ar-- ranged to move said needle and channel guide laterally in uni on to feed the work, said channel guide being arranged to engage the needle in the channel of the insole to brace the needle against the lateral stress due to feeding.

lln a shoe sewing machine, stitch torin ing mechanism comprising a needle, means for actuating the needle, a laterally movable oscillatory carrier, inc-ins on said carrier for engagingthe work-to resist the thrust of the needle'. a rm-i n-oeatory member for causing said work-engaging means to 01)- pose the thrust of the needle, and means connecting said carrier and said. recipio catory member for oscillating the carrier, said connecting means being laterally mov able with the carrier and having telescopic pin and socket connection with said reciprocatory member.

4. In a welt shoe-sewing machine, workfeeding means comprising a curved oscillatory needle, an oscillatory channel guide, said needle and channel guide being also movable laterally to feed the work, "means for moving them laterally, means for oscillating the needle, and means for oscillating the channel guide to cause it to operatively engage the work prior to engagement of the Work by the needle and to release the work at the end of the retracto'ry movement of the needle and prior to the next succeeding lateral movement thereof; a i'novable back rest for the Work, and means for actuating the back rest whereby it is caused to engage the work at the end of the feeding movement and to cooperate with the channel guide to clamp the work during the retractory movement of the needle.

.3. ln a welt shoe-sewingmachine, a power shaft, a needle and actuator therefor, 21 channel guide and actuator, a normally active thread tension, a yielding work-rest and locking mechanism therefor, and a yielding welt guide and actuating mechanism therefor, all organized so as to be actuated by a partial backward revolution of the, shaft with the etl'ect of simultaneously retraetin c the needle, channel guide, and Welt guide, and of releasing the tnread and the worlerest.

(S. In a shoe-sewing machine, a reciprocatory teed carriage, a channel guide pivotally mounted thereon so as to move therewith. an actuator, and mains arranged to transmit motion from said actuator to oscillate said channel. guide, said means being arranged upon and inovable laterally with said carriageand having telescopic pin-andsochet connection witlrsaid actuator parallel to the line of feeding movement.

T. in a. shoe ewing machine, stitch-forming mechanism including a needle, a. member arranged to engage the between substance to brace the same against the stress due to longitudinal i'novement of the needle, said member being movable toward and from the between substance, means ar ranged to move said-needle and member laterally to feed the Work, an actuating member, and means arranged to transmit motion from said actuating member to said workengaging member, the last mentioned means having telescopic pin-and-sockct connection with one of said members parallel to the line of feeding movement.

In testimony whereof I have afiixed my signature, in presence of two witnesses.

HARRIF A. BALLARD.

l/Vitnesses W. .ABELL, 

